John fitch



UNITED sTATEs PATENT oEETcE.

JOHN FITCH, SENECA FALLS, NEW YORK.

FILTER.

Specification of Letters Patent No. 29,069, dated July 10, 1860.

To all whom t 'm0/y concern:

Be it known that I, JOHN FITCH, of Seneca Falls, in the county of Senecaand State of New York, have invented a new and useful Improvement inFilters; and I do hereby declare that the following is a full and exactdescription thereof, reference being had to the accompanying drawingsand to the letters of reference marked thereon.

Figure l is a perspective view. Fig. 2 is a vertical section of myimproved filter, the same letters being used to designate the same partsin each figure referred to.

A is the outside case, or tub, which for the purpose of moreconveniently containing the apparatus may be made in the shape of anoblong box of suitable dimensions to contain the packing and cylindershereinafter described with a movable cover on the top; this case issubstantially constructed in the usual manner.

B and B2 are cylinders or crocks of stone ware, or other suitablematerial which should be about two feet in height and about eleveninches in diameter, reaching from the bottom of the case to near thelevel of the top thereof and resting on the bottom of the case two orthree inches apart. There is a space of about two inches between thesides of the cylinders and the case to be filled with packing ashereinafter mentioned. These cylinders are each open at the top andclosed at the bott-om parts thereof. Each cylinder has a shoulder on theinside about two inches above the bottom on which shoulders theperforated plates (made of stone ware) C and C2 respectively rest. Theseshoulders are designated by the latter M in Fig. 2. The pipe D connectssaid cylinders entering into each immediately below said perforatedplates and is secured or cemented to the cylinders so as to form a watertight joint at the connections and a free communication between thecylinders.

The pipes E and F project from the cylinders B and B2 respectivelythrough the outside case being secured each to its cylinder firmly by awater tight joint and are in a line with the pipe D,-opening each intoits cylinder it affords access to remove sediment from the spaces belowthe plates C and C2 these pipes are closed when the filter is in actionby the water tight caps G, G, or by gates and may be of the samematerial as the cylinders or any other suitable material. A faucet I-Iis fixed in the cylinder B2 near the bottom to draw off the sediment.

The perforated plate I rests on a shoulder M2 on the inside of thecylinder B at a point about one half the height of said cylinder and theperforated plate K rests on a similar shoulder M2 in the cylinder B2 ata point about three fourths of the height of said cylinder. The spacesbetween said perforated plates in each of said cylinders are filled withcharcoal or other suitable filtering material. For some waters andparticularly those of the Mississippi and Missouri rivers I generallyconstruct the cylinder B2 without the ltering material, using it as areservoir for the subsidence of the greater portion of the sedimentcontained in those waters and to give greater capacity I sometimesconnect with the cylinder B2 one or more additional cylinders in thesame manner as the connection is formed between the cylinders B2 and B.Immediately above the perforated plate I in the cylinder B there isfixed a faucet L.

The water or liquid to be filtered is let on to the top of the cylinderB2 and passing down said cylinder and through the pipe D into thecylinder B and up through the filtering material contained therein isdrawn from the faucet L in a purified state.

The space between the outside case and the cylinders is packed with corkor other suitable material to serve as a cooler to the liquid filtered,ice being used for that purose.

What I claim as my invention and desire to secure by Letters Patent is-The filter when constructed, arranged and operated in the manner and forthe purposes set forth.

JOHN FITCH.

Witnesses:

BENSON OWEN, RoBT. C. OWEN.

